SALT LAKE CITY (AP) - The third of three victims, including a 2-month-old girl, found fatally shot inside a northwest Salt Lake City home has been identified as a 28-year-old man, police in Utah said.

The body of Dakota Smith was discovered alongside Heike Poike, 50, and her 2-month-old granddaughter, Lyrik Poike, Salt Lake City police said Saturday.

Alexander Hung Tran, 32, was arrested after officers found him Friday night inside the home with a gun, Salt Lake City police Det. Richard Chipping said.

Police went to the home looking for relatives after Heike Poike’s 8-year-old grandson wasn’t picked up from elementary school earlier that day.

“Grandma was supposed to come pick up him up and after school had ended and nobody showed up for him, the school started trying to find somebody,” Chipping said.

After Tran was found inside, officers discovered the bodies.

Investigators don’t know of any further relationship that Tran may have had with the family or any motivation for the shootings, Chipping said. He lived in the home’s basement and allowed the victims to live on the home’s main floor, but Chipping didn’t know if they paid rent as formal tenants or had some other arrangement.

When officers arrived at the home where the boy’s grandmother lived, they looked through a window and saw what appeared to be a body covered by a tarp. They went around to the back of the home and found an open door, Chipping said.

Officers called out to see if anyone was inside and when they entered, they discovered Tran inside the home with a gun, he said. Chipping didn’t have details about how many gunshot wounds each of the victims had or Tran’s behavior when police encountered him.

When police questioned Tran, he admitted to detectives that he was responsible for the deaths, according to jail documents released Saturday. Police booked Tran into the Salt Lake County jail on suspicion of three counts of aggravated murder.

It was not immediately clear Sunday if Tran had an attorney.

Police believe the 8-year-old boy lived in the home as well.

Chipping didn’t have details about the boy’s parents or other family members but said the boy was with relatives.

Chipping said investigators were not looking for any other suspects but asked that anyone with information about the case to contact police.

Meanwhile, neighbors and friends held a candlelight vigil for the victims Saturday night. Consuelo Garcia told the Deseret News (https://bit.ly/1V3UsOE ) that she grew up with the baby’s mother and thought of Heike Poike as a mother.

“She was kind and thoughtful. If you needed someone to talk to, she was there,” she said. “Nobody deserves to die like this.”